Subtract 36/21 from 36/28
1st number: 1 8/28, 2nd number: 1 15/21
36/28 - 36/21 is -3/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
36/28 = 36 × 3/28 × 3 = 108/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
36/21 = 36 × 4/21 × 4 = 144/84 - Subtract the two like fractions:
108/84 - 144/84 = 108 - 144/84 = -36/84 - After reducing the fraction, the answer is -3/7
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